package com.zxp.springcloud.controller;

import cn.hutool.core.collection.CollectionUtil;
import com.zxp.springcloud.lb.LoadBalancer;
import com.zxp.springcloud.entities.CommonResult;
import com.zxp.springcloud.entities.Payment;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

/**
 * @description:
 * @author: 张新朋
 * @time: 2020/5/1 15:53
 */
@RestController
@Slf4j
public class OrderController {

    //public static final String PAYMENT_URL = "http://localhost:8001";

    /*单机版可以写死端口号，集群版直接暴露服务名，不关心服务下有多少端口*/
    public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";

    @Resource
    private RestTemplate restTemplate;

    @Resource
    private LoadBalancer loadBalancer;

    @Resource
    private DiscoveryClient discoveryClient;

    @PostMapping("/consumer/payment/create")
    public CommonResult<Payment> create(Payment payment){
        System.out.println("----------");
        return restTemplate.postForObject(PAYMENT_URL+"/payment/create",payment,CommonResult.class);
    }

    @PostMapping("/consumer/payment/createForEntity")
    public CommonResult<Payment> createForEntity(Payment payment){
        System.out.println("----------");
        return restTemplate.postForEntity(PAYMENT_URL+"/payment/create",payment,CommonResult.class).getBody();
    }

    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPayment(@PathVariable("id")Long id){
        return restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id,CommonResult.class);
    }

    @GetMapping("/consumer/payment/getForEntity/{id}")
    public CommonResult<Payment> getPayment2(@PathVariable("id")Long id){
        ResponseEntity<CommonResult> responseEntity = restTemplate.getForEntity(PAYMENT_URL+"/payment/get/"+id,CommonResult.class);
        log.info("---------------",responseEntity.toString());
        if(responseEntity.getStatusCode().is2xxSuccessful()){
            return responseEntity.getBody();
        }else{
            return new CommonResult<>(400,"操作失败");
        }
    }
    @GetMapping("/consumer/payment/lb")
    public String getPaymentLB(){
        List<ServiceInstance> serviceInstances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
        if(CollectionUtil.isEmpty(serviceInstances)){
            return null;
        }
        ServiceInstance serviceInstance = loadBalancer.init(serviceInstances);
        URI uri = serviceInstance.getUri();
        return restTemplate.getForObject(uri+"/payment/lb",String.class);
    }
    // ====================> zipkin+sleuth
    @GetMapping("/consumer/payment/zipkin")
    public String paymentZipkin()
    {
        String result = restTemplate.getForObject("http://localhost:8001"+"/payment/zipkin/", String.class);
        return result;
    }
}